Software Release - fwsnort-0.8.0

Completely re-structured fwsnort w.r.t. how it creates Netfilter
chains. There are no longer any per-interface chains (this
greatly simplifies the Netfilter chains).

Added three new chains "FWSNORT_INPUT_ESTAB", "FWSNORT_OUTPUT_ESTAB"
and "FWSNORT_FORWARD_ESTAB" to which tcp connections in the
ESTABLISHED state are jumped. This allows fwsnort to use the
Netfilter tcp connection tracking mechanism to ignore Stick and Snot
style attacks (similar to the flow:established Snort rule option).